int buzzer = 11;
void setup() {
  // put your setup code here, to run once:
  pinMode(buzzer,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  unsigned char k;
  while(1)
  {
    for(k=0;k<80;k++)
    {
      digitalWrite(buzzer,HIGH);
      delay(3);
      digitalWrite(buzzer,LOW);
      delay(3);
      }
    for(k=0;k<100;k++)
    {
      digitalWrite(buzzer,HIGH);
      delay(2);
      digitalWrite(buzzer,LOW);
      delay(2);
      }
    }
}
